HomeAutomationWhat is HMI | Vendors of HMI

What is HMI | Vendors of HMI

Introduction: –

HMI stands for Human Machine Interface. In this post, you can find all about What is HMI | Vendors of HMI.

HMI provides a platform for humans to interact or communicate with machines, systems, and other devices. HMI is also Known by different names as given below.

  • Operator Panel
  • Operator Interface
  • Graphical user Interface
  • Man, Machine Interface
  • Local Operator Interface

HMIs come in many types from built-in displays to computer monitors, to tablets and smartphones but the purposes of all the HMIs are the same to display Processes status.


What is HMI (Human Machine Interface) and how does it work?

HMI provides a visual representation of process parameters and the status of processes. By appropriate communication method HMI will directly communicate with PLC and take information PLC and display it on screen as per operator design.

HMI is doing two jobs

  • first read data from a tag from PLC and display on screen as per the tag binding will provide visual elements
  • get feedback from users and write values to controller tags that assign to visual elements.

Image of HMI panel


What does HMI do?

  • Visualize Process Data
  • Display Trends
  • Show Alarms and notifications
  • Display Process Statues
  • Monitor Tags
  • Integration of Recipe
  • And More


Which Industry is using HMI?

Almost all industries are using HMI for supervision and operation of industrial processes and machines in reliable ways.

  • Oil and Gas
  • Pulp and Paper
  • Steel and Metal
  • Chemical and Fertilizers
  • Energy
  • Food and Beverage
  • Transportation
  • Mining
  • Manufacturing

Standardization for Developing HMI: –

Because of many vendors in automation. All are making different HMI graphics for designing HMI screens.

Because of this, there is a stronger need to set protocol for making HMI more usable and more operator friendly.

That’s why the ISA101 protocol sets standards for HMI screen design. Another name for ISA standard HMI is High-Performance HMI.



For more information about High-performance HMI, you can also check our post on how to upgrade your standard HMI to High-Performance HMI for High Operator Effectiveness.



Importance of HMI: –

For smooth operation of plant and process operator, it needs to continuously interact with them and by using HMI it will become easier for the operator.

Modern HMI contains a fully functional and operational overview of plants for better control.



Without HMI operator is not handle plant processes and plant machinery more efficiently and quickly as per the requirements.

And without HMI we can’t think about Modern industries. We rank the importance of HMI (Human Machine Interface) on the Priority level in industrial automation.


Top Vendors of HMI (Human Machine Interface): –

There are multiple vendors available for providing Hardware as well as HMI design software. HMI Screen Providers also provide HMI Design Software.


1Wincc by SIEMENS
2Allan Bradley
3WEINTEK
4Pro-Face
5DELTA
6INVT
7WECON
8Schneider
9Maple Systems
10Mitsubishi
11Omron
Top HMI vendors

EndNote: –

HMI is the backbone of any industry. Without HMI you can’t interact with the Machines or process properly.

Growth In industrial automation increases the usability performance of HMI and makes it more operator friendly.

And in Industry4.0 HMI is become remote access from anywhere in the world without any problems.



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